<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>菜单</title>
		<style type="text/css">
			body{
				background-color: antiquewhite;
			}
			ul{
				padding-bottom: 100px;
				list-style: none;
			}
			li{
				float: left;
				margin-top: 0px;
				margin-left: 50px;
				background-color: cadetblue;
				color: antiquewhite;
				padding:5px 10px 5px 10px;
				border-radius: 10px;
			}
			li:hover{
				background-color: darkgray;
			}
			a{
				margin-top: 400px;
				text-decoration: none;
				color: antiquewhite;
				font-size: 25px;
			}
			#earth{
				border-radius: 155px;
				margin-left: 250px;
				width: 310px;
				height: 310px;
				background-image: url(images/earth.png);
				position: relative;
				animation: earth 10s infinite linear;
			}
			@keyframes earth{
				from{transform: rotate(0deg);}
				to{transform: rotate(360deg);}
			}
		</style>
	</head>
	<body>
		<ul>
			<li><a href="https://www.w3cschool.cn/dict/" target="_blank">W3CSchool</a></li>
			<li><a href="https://www.runoob.com/" target="_blank">菜鸟教程</a></li>
			<li><a href="https://www.csdn.net/" target="_blank">CSDN</a></li>
			<li><a href="https://segmentfault.com/" target="_blank">思否</a></li>
		</ul>
		<div id="earth"
			
		</div>
	</body>
</html>
